VERIFIED · SR-PICK-V1 · SATURDAY RACING · VERIFIED · SR-PICK-V1 ·
SR
AUTHENTICATED
Verifying in your browser…
Hashing the pick's canonical bytes with your device's SHA-256.
This is to certify that the pick recorded below was
cryptographically committed to Saturday Racing's transparency
ledger before the race ran . The commitment is a SHA-256
leaf hash of the canonical bytes; any subsequent tampering
breaks the hash and this certificate turns red. The check
runs on the reader's own device — no trust required from us.
The Pick
Horse Kokbastau
Race Yarmouth · 8 July 2026 · 15:45
Product Pick Winner (Mr Fox)
Advised odds 15/8
Confidence Medium
Prompt version v3_b557cbd4
Predicted at 2026-07-08T07:49:25.589760+01:00
Cryptographic Seal
Leaf hash
f18ed96e367df14f4b35d08488b9031b6b45378881578ed7024de49571cc3535
Your browser
…
Batch
13 July 2026 · 709 leafleaves
· inspect batch →
Merkle root
eba1d4cb07b18df5f26ea6211dae664c2a8d9ce7bdcd95a3a7d9da03ed6cf62b
Your browser walk
…
On-chain
Off-chain verified. Anchoring on-chain is a separate, gas-gated step.
Technical appendix — canonical bytes & Merkle proof
The canonical bytes
This is the exact JSON that was hashed. Copy it, run sha256sum on it yourself, and you should get the leaf hash above.
{"attribution":{"pick_source":"llm","prompt_version":"v3_b557cbd4"},"committed_at":"2026-07-13T21:10:27Z","issuer":"saturday-racing.com","predicted_at":"2026-07-08T06:49:25Z","product":"pick_winner","product_lane":"","race":{"course":"Yarmouth","external_id":"rac_11990329","internal_id":2599,"race_date":"2026-07-08","race_time":"15:45"},"schema":"sr-pick-v1","selection":{"advised_odds":"15/8","confidence_final":"Medium","confidence_raw":"Medium","horse":"Kokbastau","position_claim":"win"}}
Copy JSON
The Merkle proof
Each hop is a sibling hash. Your browser walks these from the leaf up to the root, hashing pairs at each step.
# Position Sibling hash
1
right
f21cb5df993fd0406ef97f5a23f2653d30a1c5a138240ea1d5d7ba32d539c341
2
right
1c2190340151454f27df7de818a8ff76d7d3fdc673347d9a5cc0948d796ca328
3
left
df58bf0a444a5cb0bbb0087a8197349de735f4c86b7c5219a584c11ce39ab917
4
left
76dcdcb009be19e021457d85235cc60c10460f67e2211c32a24f90f81141ec6c
5
left
793eb2bba37ab7e80c3cc1614e66a33db3e4b217a5e2f3921f51ff8ff177fdbb
6
right
da3d768220597c0636847e1f28e766d918af491f20ffa568c070cdc81dea7c6a
7
right
7b91ffdbc0775ceb1efdc9c047cbf134a340783b2dc1627173e9cef778ec1cf8
8
left
5029b4611810c87e9e04fd3af160ed33fa21436626c66ccbd825c959f40bd90c
9
right
559310ef76957df08e5f62efc49ff6649a36113b72a52a9a4471bd1801615514
10
left
f294ff8c83ee2bf537f6f3a850e09ef12f44b3915f1df793eb9ebfc3a7648f55
Print / save this certificate